title: Influenza A virus subtype H5N1 infection in Hong Kong--update.
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D004197:Disease Reservoirs; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D053124:Influenza A Virus, H5N1 Subtype; D009980:Influenza A virus / Q000145:classification*; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology*; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D012703:Serotyping; D017678:Sex Distribution